Question

Question 18 I need the steps the number in red is the answer

Answer 1

Given the image in the question tab, it can be seen that the Total Surface Area of the cone is required.

For a cone with length 13.4 cm, diameter 12cm, TSA =?.

Recall that;

After knowing the length and the radius, we compute the formula for Total Surface Area of a cone which is:

`\begin{gathered} \pi r(l+r) \\ \end{gathered}`

We then go ahead to calculate the Total Surface Area(TSA):

`\begin{gathered} \pi*6(6+13.4) \\ 6\pi(19.4) \\ \text{TSA}=365.68 \end{gathered}`

Hence, it can be seen from the image that the Total Surface Area of the cone is 365.68cm^2